Website: Update quote on /device-management page & testimonials yaml. (#24568)

Closes: https://github.com/fleetdm/confidential/issues/9085

Changes:
- Updated the IT personalized quote on the /device-management page
- Updated testimonials.yml

handbook/company/testimonials.yml

@@ -99,7 +99,6 @@
   quoteAuthorName: Kenny Botelho
   quoteAuthorProfileImageFilename: testimonial-author-kenny-botelho-48x48@2x.png
   quoteAuthorJobTitle: Client Platform IT Engineer / Leader
-  quoteImageFilename: social-proof-nvidia-125x32@2x.png
   quoteLinkUrl: https://www.linkedin.com/in/kennybotelho/
   productCategories: [Observability, Device management, Software management]
 -

website/views/pages/device-management.ejs

@@ -26,7 +26,7 @@
         <%} else {%>
           <div purpose="testimonial-quote">
             <div purpose="quote">
-              <img purpose="quote-logo" alt="Nividia logo" src="/images/social-proof-nvidia-125x32@2x.png">
+              <img alt="an opening quotation mark" style="width:20px; margin-bottom: 16px;" src="/images/icon-quote-21x17@2x.png">
               <p>“We wanted an open-source MDM to easily use configuration-as-code, deliver the best possible experience for our employees, and make security happy.”</p>
             </div>
             <a href="https://www.linkedin.com/in/kennybotelho/" class="d-inline-block" target="_blank">